fix: add a dedicated regex literal scope

Sema.sublime-syntax

@@ -16,6 +16,7 @@ first_line_match: '^#!.*\bsema\b'
 contexts:
   main:
     - include: line-comment
+    - include: regex
     - include: string
     - include: quoted-expression
     - include: definition
@@ -44,6 +45,17 @@ contexts:
   # ---------------------------------------------------------------------
   # STRINGS
   # ---------------------------------------------------------------------
+  regex:
+    - match: '#"'
+      scope: punctuation.definition.string.begin.sema string.regexp.sema
+      push:
+        - meta_scope: string.regexp.sema
+        - match: '\\.'
+          scope: string.regexp.sema
+        - match: '"'
+          scope: punctuation.definition.string.end.sema string.regexp.sema
+          pop: true
+
   string:
     - match: '"'
       scope: punctuation.definition.string.begin.sema

tests/syntax_test_sema.sema

@@ -30,3 +30,13 @@
 ;^^^^^^^^^^^^ support.function.sema
 ;                      ^^ constant.language.boolean.sema
 ;                         ^^^ constant.language.nil.sema
+
+(regex/match? #"\d+" "abc123")
+;^^^^^^^^^^^^ support.function.sema
+;             ^^^^^^ string.regexp.sema
+
+(regex/match? #"\"[^\"]+\"" text)
+;             ^^^^^^^^^^^^^ string.regexp.sema
+
+(regex/match? #"\\" text)
+;             ^^^^^ string.regexp.sema